Just ordered qNinjaLite:batch2/main with updates to reduce parts price. BOM will be updated later.
- Removed pricy and discontinued demodulator ADA2200
- Adhoc FFC connector to choose best photodiodes. We already picked PDB-C152SM but other ones made by a company named OSRAM looks better and cheaper. All of their candidates are already soldered onto optical unit of qNinja to be tested through this connector.
- Replace negative voltage chip from TPS63710DRRR to cheaper one by tricky way.
- Replace ADC from pricy 24bit ADS1219IPWR to NAU7802
We evaluated thermal characteristics of 3d printed tube holder and confirmed that 3d printed one can be a substitute to the CNC milled one.